Gas-engine primer.



A. I. SANDBO\ GAS ENGINE PRIMER.

APPLICATION FILED FEB. 9. 1917.

Patented Oct. 9. 1917.

' suitable straps 2, the strap's in this instance an srrns arnr onion ANTON I. SANDBO, OF ROCK ISLAND, ILLINOIS.

GAS-ENGINE PRIMER.

nsaaevi.

Specification of Letters Patent.

Patented that. Q, 191?.

Application filed February 9, 1917. Serial No. 148L669.

primer, and has for its principal object to provide a device of this character by which a. predetermined amount of fuel can be conveyed from a suitable fuel reservoir to the engine intake manifold, Where it is designed to be used for the purpose of facilitating an easy and ready starting of the engine.

A further object of the invention is to provide a primer in which another charge of fuel will gravitate into the holding sleeve immediately after the previous fuel charge has been discharged into the conveyor pipe.

With these and other objects in view as i will appear as the description proceeds, the

inventioncomprises various novel features of construction, combination and arrangement of parts as will be more fully de scribed hereinafter and set forth with particularity in the appended claims. Referring to the drawings,

Figure 1 is a sectional elevation showing my improved engine primer operatively as sociated with the intake manifold of the engine.

Fig. 2 is a front elevation of the primer, and

Fig. 3 is a vertical transverse sectional view taken on the line 3--3 'of Fig. 2.

Fig. 4 is a vertical sectional view through the holding sleeve and the lower portion of the fuel tank, showing a modified form of the device.

Similar characters of reference are used to denote like parts throughout the f0llOW- dcscri ition and the accompanying drawings.

Referring more particularly to the drawings, the reference numeral 1 indicates a fuel reservoir, which in this instance is circular in cross section, as clearly shown in Figs. 1 and 2, and is designed to be supported by ,being attached to the dash 3 of an automobile. The fuel reservoir is designed to be filled through an opening 4t that is closed by a filler cap 5.

The fuel reservoir has depending from it a holding sleeve 6, the lower end of Which is closed by a screw-threaded plug 7 that is provided with a reduced threaded extension or nipple 8, and a conveyor pipe 9 is connected to the nipple'through the medium of a union nut 10. its opposite end attached to and intermediate the ends of a horizontally disposed pipe 11, the free ends of which are attached to the opposite ends of the intake -manifold 12.

Disposed vertically through the fuel reser- This conveyor pipe 9 has voir 1 is a discharge tube 13. the lower end of which extends down into the holding sleeve 6, as indicated by the numeral 14, and the tube is provided with a pair of apertures l5 and 16 adjacent the top and bottom of the reservoir. Disposed through the discharge tube 13 is a needle valve rod 17, the lower end of which is provided with a needle point 18 designed to rest Within and normally close the inner end of the discharge opening 19 extending through the plug 7. A collar 20 is carried by the valve rod and supports a flexible or cushioned valve disk 21 that is designed to engage and close the lower end 1- 1- of the discharge tube when the valve rod is lifted to discharge the contents of the holding sleeve. In order that the discl'largc opening 19 may be immediately closed upon the discharge of the contents of the holding sleeve, an expansible spring 22 is arranged around the depending end 14: of the discharge tube and bears upon the disk 21, the opposite end of the spring bearing against the bottom of the'fuel reser-' voir.

As shown, the holding sleeve 6 is pro vided at its upper end with a vent pipe 23.

which in this instance is arcuately curved.

mined amount of fuel or, in other words, the

exact amount necessary to effectively prime the engine can be quickly and readilygravitated into the intake manifold, thus obviating the usual difficulty of either getting too much or too little fuel into the intake manifold.

in Fig. 4 of the drawings, it will be seen that the fuel supply tank 1 has depending therefrom a holding sleeve 6, the lower end of which ciused by a screw-plug 7 that is provided centrally with an. outlet opening 19.

Disposed vertically through the fuel tank is a discharge tube 13 the lower end. of

which extends down into a holding sleeve,

indicated by the numeral 1%. This discharge sleeve, like the sleeve 13, is provided with pairs of apertures 16 which serve the same purpose the apertures 15 and 16 previously described.

The valve rod 17 in this form of the device is disposed through the discharge sleeve and provided at its lower end with a pair of oppositely disposed conical valves 18 and 20, the former being slightly larger than the latter. These valves will form sort of a weighted end to the valve stem and the valve 1.8 will be normally seated Within the opening 19 by virtue of its own weight. When the valve stem is lifted, the valve 20 will engage within the lower end 1%, of the discharge tube and close it to prevent a further discharge of fuelinto the holding sleeve.

The vent tube 23' in this instance extends from the holding sleeve directly through the fuel tank adjacent the discharge tube 13.

From this, it will be seen that the operation of this form ofdeviceis substantially the same as the previously described form .of device, with the exception that in this modified form, the valve is-closed 'through the medium of gravity, while in. the former device a coil spring is used to close the valve aaeaeri in addition to the gravity closing of the valve.

What I claim to be new is 1. A gas engine primer comprising a fuel reservoir, a holding sleeve depending from the reservoir and provided with a vent opening, a conveyer pipe attached to the lower end of said sleeve, a discharge tube disposed through the fuel reservoir and projecting into said holding sleeve, said discharge tube being provided adjacent the top and bottom inner surfaces of the reservoir with a pair of apertures, and-a valve rod disposed through the holding sleeve and the discharge tube and adapted to alternately close and open the bottom of the discharge tube and the holding sleeve.

2. A gas engine primer comprising a fuel reservoir, a holding sleeve depending from the reservoir and provided with a vent opening, a conveyer pipe attached to the lower end of the holding sleeve, a discharge tube disposed through the reservoir and projecting into the holding sleeve, said discharge tube being provided adjacent the top and bottom inner surfaces of the reservoir with pairs of apertures, a needle valve rod disposed through said discharge tube and adapted to normally close the conveyer pipe, a disk valve arranged on the valve rod and adapted to close the lower end of the discharge tube when the valve rod'is lifted to open the conveyer pipe, and an expansible spring arranged between the valve disk and the bottom of the reservoir.

3. A gas engine primer comprising a fuel reservoir, a holding sleeve depending from the reservoir and provided with a vent opening, a plug valve seat connected to and closing the lower end of said holding sleeve, a conveyer pipe attached to the lower end of said plug valve seat, a discharge tube disposed through the fuel reservoir and proiecting into said holding sleeve. said discharge tube being provided at points within the fuel reservoir with apertures, and a valve rod disposed through said holding sleeve and the di charge tube and adapted to alternately o -.n and close the bottom of the holding sleeve nd the discharge tube. 

